A nut in botany is a simple dry fruit with one seed (rarely two) in which the ovary wall becomes very hard (stony or woody) at maturity, and where the seed remains attached or fused with the ovary wall.
Every nut who kills people has a Bible lying around. If you're looking for violent rape imagery, the Bible's right there in your hotel room. If you just want to look up ways to screw people up, there it is, and you're justified because God told you to. Penn Jillette
Hollywood didn't know if I was an actor or a nut or if I was this crazy character I was playing. I had developed an image of being a little bit unusual, different and wild. Nicolas Cage